photo credit: Andrew Davidhazy, Rochester Institute of Technology
This photo shows the formation of a long neck, which is produced by surface tension. Notice how the drop makes a small inverted image of its shadow.
For a related and well-illustrated site on drops and surface tension, see Drop Formation. Also, you might enjoy this movie of water dripping slowly from a tap.
To make a water drop magnifier, visit Kitchen Science Experiments: Drop Magnifier.
This feature was updated on July 5, 2013.
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Try this Exploratorium activity, "Electrical Fleas," to investigate static electricity. For a related Exploratorium activity, see "Charge and Carry."